This is an example. As you can see, flexdashboard can have text annotations.

---
title: "Gauge, Navigation Bar & Text Annotation"
output: 
  flexdashboard::flex_dashboard:
    orientation: columns
    source_code: embed
    navbar :
      - { title: "About", href: "https://example.com/about", align: right }
      - { icon: "fa-pencil", href: "https://www.naver.com", align: right}
---

This is an example. As you can see, flexdashboard can have text annotations.

```{r setup, include=FALSE}
library(flexdashboard)
library(ggplot2)
library(knitr)
```

Column1
-----------------------------------------------------------------------
### Gauge ex1. Contact Rate

```{r}
gauge(35, min = 0, max = 100, symbol = '%',
      sectors = gaugeSectors(success = c(80, 100),
                             warning = c(40, 79),
                             danger = c(0, 39)
))

```

### Gauge ex2. Average Rating 

```{r}
rating = 42
gauge(rating, 0, 50, label = 'Test', gaugeSectors(
  success = c(41, 50), warning = c(21, 40), danger = c(0, 20)
))

```

### Chart C

```{r}

```